Help with login Admin

[ultimategeek]

ok
i can login into my forum with no problems, but if i try to login to the Admin section it starts to load the page and then asks for the password again. I am lost and i have no idea whats happening.
I get no error messages

plus i can't log out of the forum

can someone help

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and now i can't log into the forum

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and now i've just been told nobody can sign in

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my forum address is: www.ultimatemovieforum.com

i did change the cookies to www.ultimatemovieforum.com/forum.php

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Sorted please close